DCD, celebrating its 15thanniversary, has released the D16950, which is an IP Core of a Universal Asynchronous Receiver/Transmitter (UART), functionally compatible to the OX16C950. It allows serial transmission in two modes: UART and FIFO. In the FIFO mode, internal FIFOs are activated, allowing 128 bytes (plus 3 bits of error data per byte in the RCVR FIFO) to be stored in both receive and transmit modes.

Bytom, Poland. 3rd of June 2014 -- DCD’s UART IP Core performs a serial-to-parallel conversion on data characters received from a peripheral device or a
MODEM. And for those who need more, the D16950 enables also parallel-to-serial conversion on data characters received from the
CPU. The processor can read a complete status of the UART at any time during the functional operation. Reportedstatus information includes the type and condition of transfer operations being performed by the UART, as well as any error conditions (parity, overrun, framing or break interrupt). -
The D16950 includes a programmable baud rate generator, which is capable to divide the timing reference clock input by divisors of 1 to (216-1) and produce a n × clock for driving the internal transmitter logic – explains Jacek Hanke, DCD’s CEO. Provisions are also included to use this n × clock to drive the receiver logic.

The D16950 UART IP Core is equipped with a complete
MODEM-control capability and a
processor-interrupt system.
- Interrupts can be programmed in accordance to your requirements, minimizing computing required to handle the communications link – adds Hanke. The D16950 core includes all other UARTs (16450, 16550, 16650 and 16750) features and additional functions. Saying this, one can mention the ICR registers, which give additional capabilities of UART work configuration. The data transmission may be synchronized by an external clock connected to the RI (for receiver and transmitter) or the DSR (only for receiver) pin. The NMR register enables a
9-bit mode transmission, with or without special character. Writing and reading from/to FIFO may be controlled by trigger level registers, with
any value set from 1 to 127.

DCD’s IP Core implements also autoflow control feature, which can
significantly reduce software overload and automatically
increase the system efficiency, by controlling serial data flow through the RTS output and the CTS input signals.

The
D16950 is perfect for applications, where
the UART core and the microcontroller are clocked by the same clock signal and are implemented inside the same ASIC or FPGA chip. Nevertheless, it's also a proprietary solution for
a standalone implementation, where several UARTs are required to be implemented inside a single chip and driven by some off-chip devices. Thanks to a universal interface, the D16950 core implementation and verification are very simple, just by eliminating a number of clock trees in the complete system.

DCD’s IP Core includes fully automated testbench with complete set of tests, allowing easy package validation at each stage of SoC design flow. The D16950 is also a technology independent design, that can be implemented in a variety of process technologies.

In 2014 Digital Core Design celebrates its 15th Anniversary. The company founded in 1999, since the beginning stands in the forefront of the IP Core market. High specialization and profound customer service enabled to introduce more than 70 different architectures. Among them is the world’s fastest 8051 IP Core, the DQ80251, which is more than 66 times faster than the standard solution. As an effect, over 300 hundred licensees have been sold to more than 500 companies worldwide. Among them are the biggest enterprises like e.g. Sony, Siemens, General Electric and Toyota. But a lot of DCD’s customers are small businesses, R&D laboratories or front/back end offices, which require exact solution tailored to their project needs. Rough estimations say that more than 250 000 000 devices around the globe have been based on Digital Core Design’s IP Cores.